Finding the Third Proportional to 2,139,664,891.50 and 4,659,183,432

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,664,891.50 : 4,659,183,432 = 4,659,183,432 : x
2. Step 2: Convert to fraction form
   2,139,664,891.50/4,659,183,432 = 4,659,183,432/x
3. Step 3: Cross multiply
   2,139,664,891.50x = 4,659,183,432 × 4,659,183,432
4. Step 4: Simplify right side
   2,139,664,891.50x = 21,707,990,253,023,297,536
5. Step 5: Solve for x
   x = 21,707,990,253,023,297,536/2,139,664,891.50
6. Step 6: Final answer
   x = 10,145,509,392.27